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Shareholders' Equity Market Based Restricted Stock (Details)
12 Months Ended
Nov. 18, 2014
$ / shares
Oct. 03, 2012
tranche
$ / shares
Jan. 30, 2016
$ / shares
shares
Jan. 31, 2015
$ / shares
shares
Feb. 01, 2014
$ / shares
Jun. 18, 2015
tranche
Jun. 18, 2014
tranche
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted, weighted average grant date fair value     $ 3.95 $ 3.92 $ 3.96    
Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Non-vested shares outstandings | shares     861,000 704,000      
Number of tranches | tranche   3       8 7
Number of consecutive trading days   20 days          
Risk Free Interest Rate 1.03% 0.32%          
Implied volatility rate 60.00% 78.00%          
Granted, weighted average grant date fair value $ 4.91            
Expected Term   2 years 9 months 18 days          
Market Based Stock Restricted Stock Awards [Member] | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Non-vested shares outstandings | shares     133,000        
Required holding period   1 year          
Tranche 1 [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted, weighted average grant date fair value   $ 0.93          
Expected Term   15 months          
Tranche 1 [Member] | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Exercise price range, minimum   $ 6.00          
Award vesting percentage   50.00%          
Granted, weighted average grant date fair value   $ 1.48          
Expected Term   15 months          
Tranche 2 [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted, weighted average grant date fair value   $ 0.95          
Expected Term   20 months          
Tranche 2 [Member] | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Exercise price range, minimum   $ 8.00          
Award vesting percentage   25.00%          
Granted, weighted average grant date fair value   $ 1.39          
Expected Term   20 months          
Tranche 3 [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted, weighted average grant date fair value   $ 0.95          
Expected Term   24 months          
Tranche 3 [Member] | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Exercise price range, minimum   $ 10.00          
Award vesting percentage   25.00%          
Granted, weighted average grant date fair value   $ 1.31          
Expected Term   24 months          
Less than 33% [Member] | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted Stock, Vesting Criteria, Total Shareholder Return     0.00%        
Greater than 33% [Member] | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted Stock, Vesting Criteria, Total Shareholder Return     50.00%        
Greater than 50% [Member] | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted Stock, Vesting Criteria, Total Shareholder Return     100.00%        
Greater than 100% [Member] | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted Stock, Vesting Criteria, Total Shareholder Return     150.00%